Safety anchor



Dec. 3, 1929.

A. BARDELLO SAFETY ANCHOR Filed Nov. 8, 1937 Ticll.

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INVENTOR ANTONIO BARDE LLO Wally A TTOR/VEY Patented Dec. 3, 1929 UNITEDSTATES PATENT OFFICE ANTONIO BARDELLO, 0F BROOKLYN, NEW YORK, ASSIGNOB'IO AINSWOBTH BUCK, INCORPORATED, OF NEW YORK, N. Y., A. CORPORATION OFNEW YORK SAFETY ANCHOR Application filed November 8, 1927. Serial No.231,980.

The invention relates to a safety anchor designed to be secured to ametallic window frame construction or the like, and which is adapted toreceive the clips and other attachments such as are carried on the endsof safety belts used by window cleaners. The present disclosureconstitutes an improve ment in and an addition to the inventiondisclosed in my co-pending application on safety anchor mountings,bearing Serial No. 205,881 filed July 14, 1927.

In the above identified application, as well as in this application,there is featured a safety anchor construction particularly designed forinstallation on thin sheet metal window frames and where it is desiredto provide a secure mounting for the anchor. The anchor is positioned toextend over a relatively large area of metal frame so as to relievetearing strains on the thin sheet metal. This is attained by positioninga rugged metallic reinforcement on the inner side of the window frame,mounting a strong anchor on the opposing outer side and securing theserugged parts by screws passed therethrough. It is the usual practice totighten the screws under tension and thus hold the sheet metal firmlyclamped between the internal rein forcement and the external anchor.

It has been found that under some circumstances, as for instance, wherethe anchor is subjected to jars and laterally directed strains while inuse that the tensioned screw has a tendency to rerotate, releasing thetight clamping engagement with the window frame, resulting in aloosening of the parts and permitting the formation of rust in thejoined surfaces between the anchor and window frame.

Accordingly, the primary object of the invention is to provide aconstruction of the type outlined which will insure the maintenance ofthe parts in their initially set clamped position.

Another object of the invention is to provide a simplified constructionof safety anchor which can be readily cast and which will provide screwlocking features capable of being readily hammered or peened intooperative position and at the same time novel features of constructionand combina- 69 tion of parts hereinafter set forth and claimed. a

In the accompanying drawings:

Fig. 1 is a transverse sectional view taken on the line 1 1 of Fig. 2and showing a preferred embodiment of the invention;

Fig. 2 is a fragmentary view in front elevation of the safety anchorshown in Fig. 1; and i Fig.3 is a viewmain'ly in side elevation of r theanchor shown in the preceding figures with parts broken away to show oneofthe screw locking lugs featured in this application.

In the drawings and referring particularly tothe showing in Fig. 1,there is shown partof a corner of a window frame 10, it being understoodthat such frames are customarily formed of an extremely thin gauge ofmetal 11. Positioned Within the corner 12 of the frame isa reinforcingelement 17 secured in place by means of a bolt and nut fastener 25. Ametallic casting 16 constituting an anchor is positioned on the outerface of the frame and is secured to the inner reinforcement 17 by a pairof screws 28 passed through apertures in the frame. A curved post 17projects laterally from the base plate 15 of the anchor and otherwisethe structure is of the form more fully disclosed in the aboveidentified application.

In forming the anchor with its relatively long rectangular base plate15, there is cast integral therewith a pair of relatively thinupstanding lugs 29 and 30 which are positioned at the narrow ends of theplate 15 and between each end and the adjacent screw hole 30. These lugsare rectangular in cross section adjacent their end nearest the baseplate with their greatest width parallel to the ice adjacent narrow endof the plate so that they may be readily bent about their long apex orcrotch 31 and thus moved from the upstanding solid line position shownin Fig. 3 into the dotted line position overlapping the head 32 of theadjacent screw. The usual practice after the screws have been tightenedis to hammer the lugs into engagement with the top of the screws andthus engage the same to prevent rerotation of the screws out of theirclamping position.

By means of device of this character, it is possible to retain all ofthe advantages recited in the above identified application and at thesame time to provide a locking of the screws in position and thelockingmeans will in no way interfere with the quick engaging of the clip withthe post. The reinforcing of the narrow body of material between each ofthe screw holes and the adjacent end of the anchor base plate by thelugs tends to give strength and ri idity to the anchor as a whole.

' I claim 1. A window frame including a sheet metal form provided with apair of apertures, an internal reinforcement'for the frame having a flatface in engagement with and extending across the part provided'with theapertures,

an anchor engaging the side of the form 0pposite the reinforcement, anda pair of fastening means passed from the outside of the frame throughthe anchor, through the "two apertures and extending into thereinforcement, said means acting under tension W1th each secured 1n saidtensloned position,

and coacting to secure the anchor and reinforcement with the metal formfixedly clamped therebet-ween at the two apertures.

2. A window frame including a sheet metal form, an internalreinforcement and an external anchor having flat surfaces positioned onopposite sides of the form, fastening means engaging the reinforcementand anchor for securing the form clamped therebetween and means integralwith the anchor and adapted to be moved into position en'- gaging thefastening means for securing the reinforcement and anchor in said formclamping position.

Signed at New York, in the county of New York and State of New York,this 20th day of October, A. 111927.

BARDELLO.

